The actual software is called Sony Vegas Pro (now Vegas Pro by Magix), with versions like 13, 14, 15, 16, 17, 18, 19, 20, and 21. "1500" appears to be a typo or a fabricated version number often used on pirate sites to disguise cracked software.
Enables multi-axis spatial layouts with real-time positional manipulation directly within the Video Preview display window. sony vegas pro 1500 build 177 patch link